$50 Craigslist 360 EXTREME budget rebuild??

[yellow rose]

Stock cast open chambers have that wide flat area at about .090" deep. I can't say how much that will vary; I've only measured a few with the same idea in mind....open to closed chamber conversion. If you have the chance jpar, measure how much depth is actually left there.

I've seen them as deep as .115-.118 and about .100 seemed to be normal. The stuff is so old that it's all been cut two, three or a half dozen times by now.

 

[nm9stheham]

Far less stressful, but it's a struggle to not put more money into it- a big struggle..

We are here to help you get past your inhibitions LOL

 

[j par]

I'm pretty sure the 360 motor hasn't been apart before, you can usually tell there's plenty of signs but you know that.

I've seen them as deep as .115-.118 and about .100 seemed to be normal. The stuff is so old that it's all been cut two, three or a half dozen times by now.

 

[j par]

10-4

Stock cast open chambers have that wide flat area at about .090" deep. I can't say how much that will vary; I've only measured a few with the same idea in mind....open to closed chamber conversion. If you have the chance jpar, measure how much depth is actually left there.

 

[Cudafever]

So CC them combustion chambers already!

 

[j par]

I broke out the silly-puddy and a strait edge and the trustee Harbor Freight digital micrometer and got .050 - .070 still left.

 

[j par]

I've already decided I'm not going to spend multiple hours porting these heads. I'll spend an hour on each one opening up under the seat a little bit, but I'm not going crazy with it. I still have to plug all the smog holes on the exhaust ports, lap the valves, and install the springs.

 

[Cudafever]

Just a little bowl clean up will make a difference. Keep that grinder away from the seat.

 

[j par]

I wonder about testing the valve springs ? Where? How? Don't do it enough to buy one, rent? A NEW REDNECK TOOL!!?
I'm using the ones from the 318 because they already have ran with that cam and they're way cleaner. But I thought I remembered one being loose ??

 

[j par]

10-4 that! Just a little bit under the seat.

Keep that grinder away from the seat.

 

[Cudafever]

1.88 weigh more then the 318s intake valve........how much lift is the cam? maybe just add a .020 shim under the valve for just in case.......

 

[j par]

EASY- The heads are ready to bolt on - after 8-10 more hours of work

 

[j par]

Harbor Freight digital micrometer says 1.27 on base of cam and 1.57 on lobe. About a 450 lift I assume ?

1.88 weigh more then the 318s intake valve........how much lift is the cam? maybe just add a .020 shim under the valve for just in case.......

 

[j par]

Shims? Oh boy, what next!?
Can't things be more simple ?!
LOL

 

[nm9stheham]

Well, when the wife runs the rev's up and floats the heavier valves on that higher than stock lift and cam ramp rate (not only possible but fairly likely?), the pistons way down in the hole may well save things from crashing together. FINALLY! A virtue in those low compression height 318 pistons!

Yes, you look to be about right on the lift....that is a pretty standard max lift range for the stock valvetrain.

 

[j par]

^^ I'll be pre-testing everything first. If it passes my test she'll be fine

 

[gtsdude]

Jpar, if ya need shims let me know, I bought some and ended up with way too many, I can send them your way, no charge.

 

[318willrun]

If your around .450 lift, stock springs are just fine (360 or 318).
I'm only going to say this once, not going to argue with the nay-sayers:
I've ran .474 lift cams on stone-stock 318 heads, and 360 heads, and NEVER had coil bind or valve float shifting at 5500 rpms or under. Some of it has to do with how fast the duration ramps up and slams it shut. You will NOT get the advertise lift with stock rockers.

• J par, you can take your springs to a machine shop and they can check the pressure, probably for free if you been there a few times.

 

[j par]

Thank you that's very kind of you and I may take you up on that I'll go and have things checked.

Jpar, if ya need shims let me know, I bought some and ended up with way too many, I can send them your way, no charge.

 

[j par]

Thats what I was thinking - taking them to a shop.

If your around .450 lift, stock springs are just fine (360 or 318).
I'm only going to say this once, not going to argue with the nay-sayers:
I've ran .474 lift cams on stone-stock 318 heads, and 360 heads, and NEVER had coil bind or valve float shifting at 5500 rpms or under. Some of it has to do with how fast the duration ramps up and slams it shut. You will NOT get the advertise lift with stock rockers.

• J par, you can take your springs to a machine shop and they can check the pressure, probably for free if you been there a few times.

 

[Cudafever]

now there is you REAL done it before comment!!!

 

[j par]

now there is you REAL done it before comment!!!

?

 

[j par]

I was never worried about coil bind that's for sure. Same cam same Springs same lifters same Push rods. It's just as I was recalling that Thought one of the Springs seemed a little loose at install height like I could turn it too easily.

 

[318willrun]

I was never worried about coil bind that's for sure. Same cam same Springs same lifters same Push rods. It's just as I was recalling that Thought one of the Springs seemed a little loose at install height like I could turn it too easily.

That should never be, you had something else going on there. That spring should never be relaxed enough to be loose.....

 

[Cudafever]

?

I think, i heard, some one told me,.............nope he has done it!!! Was kind being a smart *** in friendly way.